>>>>> "DS" == Dan Sugalski <[EMAIL PROTECTED]> writes:
DS> At 10:32 AM 9/4/2001 +0100, Piers Cawley wrote:
>> Will the subroutine know how it was called? (ie: Through method
>> dispatch or through straightforward symbol table lookup. I'm really
>> hoping the answer to this is 'yes'.) Or will methods and subroutines
>> be distinct now?
DS> I suppose we could, and I don't know.
damian's new want (RFC 21) will be able to tell the difference. there is
a method context that is returned if called via a method.
DS> Can you see any use of a sub knowing it was called via a method
DS> call?
for sure. one case i saw recently in c.l.p.m was someone who wanted to
chain method calls together like this:
$obj->meth1()->meth2() ;
this is easy assuming you return the object in each method call. but he
ALSO wanted:
$bar = $obj->meth1() ;
to return something other than $obj.
so it would be easy to check that with want and return the desired
thing.
i am sure damian will be able to come up with more examples. in any case
it is specified in his want RFC and i will bet it will be in the
language. the whole want thingie is very cool.
uri
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